EP 2236484 A1 20101006 - PLANT FOR THE LIQUID PHASE SYNTHESIS OF ISOPRENE FROM ISOBUTYLENE AND FORMALDEHYDE
Title (en)
PLANT FOR THE LIQUID PHASE SYNTHESIS OF ISOPRENE FROM ISOBUTYLENE AND FORMALDEHYDE
Title (de)
ANLAGE FÜR DIE FLÜSSIGPHASENSYNTHESE VON ISOPREN AUS ISOBUTYLEN UND FORMALDEHYD
Title (fr)
INSTALLATION DESTINÉE À LA SYNTHÈSE D'ISOPRÈNE EN PHASE LIQUIDE À PARTIR D'ISOBUTYLÈNE ET DE FORMALDÉHYDE
Publication
Application
Priority
- RU 2008000367 W 20080609
- RU 2007147962 A 20071221
Abstract (en)
The invention relates to a plant for the synthesis of isoprene in a liquid phase from isobutylene and formaldehyde or from the source substances thereof. The inventive plant consists of a dimethyl dioxane synthesis unit detached from two parallel operating trimethyl carbinol synthesis units, and the trimethyl carbinol and dimethyl dioxane produced therein are simultaneously supplied for common decomposition to an isoprene synthesis unit. Light by-products extracted in a unit for rectifying high-boiling by-products, which unit is located downstream of the dimethyl dioxane synthesis unit, are supplied either to sales or to decomposition together with by-products (methyl-dihydropyrane fraction) which are produced during end-products separation and isoprene monomer extraction, or to sales and to a decomposition unit for decomposition together with the above-mentioned by-products (methyl-dihydropyrane fraction), afterwards to the end-product separation and isoprene monomer extraction unit. The end-product separation and isoprene monomer extraction unit is directly connected to the soprene synthesis unit, the decomposition unit and to the dimethyl dioxane synthesis unit. Said plant makes it possible to reduce the accumulation of high-boiling by-products, to decrease the production costs and to improve the engineering-and-economical performances of the process.
IPC 8 full level
C07C 11/18 (2006.01); C07C 2/86 (2006.01)
CPC (source: EP)
C07C 2/867 (2013.01)
C-Set (source: EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2236484 A1 20101006; EP 2236484 A4 20120118; CN 101970387 A 20110209; WO 2009082260 A1 20090702
DOCDB simple family (application)
EP 08794018 A 20080609; CN 200880127238 A 20080609; RU 2008000367 W 20080609